Match the elements to their periodic table groups based on their uses or properties. {Element is used as a disinfectant}
{Element important for the proper}
{functioning of the human body.}
{Element always stored under oil.}
{Compounds of this element are
used in manufacturing of paints.}

group 3–12

group 1

group 17

group 2

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

A( developed during the process of technology design

The energy equivalent of the rest mass of an electron is